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from landscape.lib.monitor import (
Timer, Monitor, BurstMonitor, CoverageMonitor, FrequencyMonitor)
from landscape.reactor import FakeReactor
from landscape.tests.helpers import LandscapeTest
class ReactorHavingTest(LandscapeTest):
def setUp(self):
super(ReactorHavingTest, self).setUp()
self.reactor = FakeReactor()
class TimerTest(ReactorHavingTest):
def setUp(self):
super(TimerTest, self).setUp()
self.timer = Timer(create_time=self.reactor.time)
def test_since_start(self):
self.assertEquals(self.timer.since_start(), 0.0)
self.reactor.advance(1)
self.assertEquals(self.timer.since_start(), 1.0)
self.reactor.advance(2)
self.assertEquals(self.timer.since_start(), 3.0)
def test_since_reset(self):
self.reactor.advance(1)
self.assertEquals(self.timer.since_reset(), 1.0)
self.reactor.advance(1)
self.assertEquals(self.timer.since_start(), 2.0)
self.reactor.advance(2)
self.timer.reset()
self.assertEquals(self.timer.since_start(), 4.0)
class MonitorTest(ReactorHavingTest):
def setUp(self):
super(MonitorTest, self).setUp()
self.monitor = Monitor("test", create_time=self.reactor.time)
def test_ping(self):
self.assertEquals(self.monitor.count, 0)
self.assertEquals(self.monitor.total_count, 0)
self.monitor.ping()
self.assertEquals(self.monitor.count, 1)
self.assertEquals(self.monitor.total_count, 1)
def test_reset(self):
self.assertEquals(self.monitor.count, 0)
self.monitor.ping()
self.monitor.ping()
self.assertEquals(self.monitor.count, 2)
self.assertEquals(self.monitor.total_count, 2)
self.monitor.reset()
self.monitor.ping()
self.assertEquals(self.monitor.count, 1)
self.assertEquals(self.monitor.total_count, 3)
def test_log(self):
for i in range(100):
self.monitor.ping()
self.reactor.advance(1)
self.monitor.log()
self.assertTrue("INFO: 100 test events occurred in the last 100.00s."
in self.logfile.getvalue())
class BurstMonitorTest(ReactorHavingTest):
def setUp(self):
super(BurstMonitorTest, self).setUp()
self.monitor = BurstMonitor(60, 1, "test",
create_time=self.reactor.time)
def test_warn_no_pings(self):
self.assertFalse(self.monitor.warn())
def test_warn_below_threshold(self):
self.monitor.ping()
self.reactor.advance(61)
self.assertFalse(self.monitor.warn())
def test_warn_on_threshold(self):
self.monitor.ping()
self.reactor.advance(61)
self.assertFalse(self.monitor.warn())
def test_warn_over_threshold(self):
self.monitor.ping()
self.reactor.advance(30)
self.monitor.ping()
self.assertTrue(self.monitor.warn())
self.reactor.advance(31)
self.assertFalse(self.monitor.warn())
def test_warn_in_first_interval(self):
self.monitor.ping()
self.reactor.advance(59)
self.assertFalse(self.monitor.warn())
def test_warn_unexpected_burst(self):
self.monitor.ping()
self.reactor.advance(5000)
self.assertFalse(self.monitor.warn())
self.monitor.ping()
self.assertFalse(self.monitor.warn())
self.monitor.ping()
self.assertTrue(self.monitor.warn())
def test_warn_maximum_count(self):
monitor = BurstMonitor(60, 2, "test", create_time=self.reactor.time)
monitor.ping()
monitor.ping()
self.assertFalse(monitor.warn())
monitor.ping()
self.assertTrue(monitor.warn())
def test_warn_maximum_count_over_time_span(self):
monitor = BurstMonitor(60, 3, "test", create_time=self.reactor.time)
monitor.ping()
monitor.ping()
self.assertFalse(monitor.warn())
self.reactor.advance(30)
monitor.ping()
self.assertFalse(monitor.warn())
self.reactor.advance(31)
monitor.ping()
self.assertFalse(monitor.warn())
monitor.ping()
monitor.ping()
self.assertTrue(monitor.warn())
class CoverageMonitorTest(ReactorHavingTest):
def setUp(self):
super(CoverageMonitorTest, self).setUp()
self.monitor = CoverageMonitor(1, 1.0, "test",
create_time=self.reactor.time)
def test_warn(self):
self.monitor.ping()
self.reactor.advance(1)
self.assertFalse(self.monitor.warn())
self.reactor.advance(1)
self.assertTrue(self.monitor.warn())
self.monitor.reset()
self.assertFalse(self.monitor.warn())
def test_percent_no_data(self):
"""
If no time has passed and the monitor hasn't received any
pings it should return 100%.
"""
self.assertEquals(self.monitor.percent, 1.0)
def test_percent(self):
self.reactor.advance(1)
self.assertEquals(self.monitor.percent, 0.0)
self.monitor.ping()
self.reactor.advance(1)
self.assertEquals(self.monitor.percent, 0.5)
def test_percent_reset(self):
self.reactor.advance(1)
self.assertEquals(self.monitor.percent, 0.0)
self.monitor.reset()
self.monitor.ping()
self.reactor.advance(1)
self.assertEquals(self.monitor.percent, 1.0)
def test_expected_count(self):
self.reactor.advance(1)
self.assertEquals(self.monitor.expected_count, 1.0)
self.reactor.advance(1)
self.assertEquals(self.monitor.expected_count, 2.0)
def test_expected_count_reset(self):
self.reactor.advance(1)
self.assertEquals(self.monitor.expected_count, 1.0)
self.monitor.reset()
self.reactor.advance(1)
self.assertEquals(self.monitor.expected_count, 1.0)
def test_log(self):
for i in range(100):
self.monitor.ping()
self.reactor.advance(1)
self.monitor.log()
self.assertTrue("INFO: 100 of 100 expected test events (100.00%) "
"occurred in the last 100.00s."
in self.logfile.getvalue())
def test_log_warning(self):
for i in range(100):
self.reactor.advance(1)
self.monitor.log()
self.assertTrue("WARNING: 0 of 100 expected test events (0.00%) "
"occurred in the last 100.00s."
in self.logfile.getvalue())
class FrequencyMonitorTest(ReactorHavingTest):
def setUp(self):
super(FrequencyMonitorTest, self).setUp()
self.monitor = FrequencyMonitor(100, 1, "test",
create_time=self.reactor.time)
def test_expected_count(self):
self.assertEquals(self.monitor.expected_count, 0)
self.reactor.advance(99)
self.assertEquals(self.monitor.expected_count, 0)
self.reactor.advance(1)
self.assertEquals(self.monitor.expected_count, 1)
def test_ping(self):
self.assertFalse(self.monitor.warn())
self.reactor.advance(80)
self.monitor.ping()
self.assertFalse(self.monitor.warn())
self.reactor.advance(80)
self.assertFalse(self.monitor.warn())
def test_warn(self):
self.assertFalse(self.monitor.warn())
self.reactor.advance(101)
self.assertTrue(self.monitor.warn())
def test_log(self):
self.monitor.ping()
self.reactor.advance(100)
self.monitor.log()
self.assertTrue("minimum expected test events"
not in self.logfile.getvalue())
self.reactor.advance(1)
self.monitor.log()
self.assertTrue("WARNING: Only 0 of 1 minimum expected test events "
"occurred in the last 100.00s."
in self.logfile.getvalue())
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